Does this prove David Vizard's 128 lsa formula ?

Since we are talking cams i have something that is bothering me... This is the first time i degree'd a cam.. usually just went dot to dot.. My cam from howards said to install on a 103, but dot to dot gave it a 109.. is it normal for a cam to be that far off? i checked it like 5 times to make sure it wasn't me. Emailed howards and they said advance it to 103 so i did.. been bugging me since though. (i should have checked more cyls)